This functionality is in beta and is subject to change. The design and code is considered to be less mature than official GA features. Elastic will take a best effort approach to fix any issues, but beta features are not subject to the support SLA of official GA features.

You must configure queries for the Windows performance counters that you wish
to collect. The example below collects processor time and disk writes.
With format you can set the output format for a specific counter. Possible values are
float and long. If nothing is selected the default value is float.
With instance_name, you can specify the name of the instance. Use this setting when:
- You want to use an instance name that is different from the computed name. For example, Total instead of _Total.
- You specify a counter that has no instance. For example, \TCPIP Performance Diagnostics\IPv4 NBLs/sec indicated without prevalidation.
For wildcard queries this setting has no effect.